CN103884459B - A kind of measurement of power equipment - Google Patents
A kind of measurement of power equipment Download PDFInfo
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- CN103884459B CN103884459B CN201410119766.1A CN201410119766A CN103884459B CN 103884459 B CN103884459 B CN 103884459B CN 201410119766 A CN201410119766 A CN 201410119766A CN 103884459 B CN103884459 B CN 103884459B
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- 238000005259 measurement Methods 0.000 title abstract 12
- 230000005540 biological transmission Effects 0.000 claims description 17
- 238000012360 testing method Methods 0.000 abstract description 18
- 239000007858 starting material Substances 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000013142 basic testing Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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Abstract
The invention discloses a kind of measurement of power equipment, belong to power machine and manufacture field.Measurement of power equipment comprises propulsion system and power measurement arrangement, and propulsion system, power measurement arrangement are connected in turn with engine.The present invention drives power measurement arrangement to rotate by propulsion system, power measurement arrangement is made to drive engine rotation, when the rotating speed of engine reaches startup rotating speed, engine is activated, and now disconnects the connection between propulsion system and power measurement arrangement, driven by engine power measurement arrangement is rotated, thus realize power measurement arrangement engine is tested, obtain the operational factor of engine, the starter motor not needing optional equipment different starts engine, reduce testing cost, easy to use; The present invention drives power measurement arrangement to rotate by propulsion system, and drag engine rotation by power measurement arrangement when ensureing that engine is not activated, and measure the towing astern frictional work of engine, the engine test needing to measure towing astern frictional work is launched smoothly.
Description
Technical Field
The invention relates to the field of power machine manufacturing, in particular to a dynamometer.
Background
In the process of engine test development, in order to ensure that the power of an engine meets requirements, the engine must be tested, firstly, the operating parameters of the engine can be obtained by testing the engine which normally operates, and the output power of the engine is determined by calculating the operating parameters, meanwhile, in some engine tests, the mechanical friction resistance and the power consumed by other resistance, namely, the drag friction work, during the operation of the engine is measured by a drag method.
In the prior art, engines are mostly tested by a dynamometer, and the existing dynamometer is generally an eddy current dynamometer. The eddy current dynamometer mainly comprises an eddy current brake, a force measuring device, a speed measuring device, a shell and a connecting flange, wherein the eddy current brake, the force measuring device and the speed measuring device are all arranged inside the shell, the force measuring device and the speed measuring device are all connected with the eddy current brake, the connecting flange is positioned outside the shell, one end of the connecting flange is connected with the eddy current brake, during use, the other end of the connecting flange is connected with an engine, the engine is connected with a starter matched with performance parameters of the engine, the engine is started through the starter, the engine drives the eddy current brake to rotate, and the engine is tested through the force measuring device and the speed measuring device. However, the eddy current dynamometer does not have the capability of active rotation, and the engine cannot be dragged to operate under the condition that the engine is not started, so that the eddy current dynamometer cannot measure the back-dragging friction work of the engine.
In the process of implementing the invention, the inventor finds that the prior art has at least the following problems:
when the dynamometer in the prior art is used, an engine must be equipped with a matched starter to start the dynamometer, and different starters are required to be equipped for different engines due to different performance parameters of different engines, so that the cost of engine testing is directly increased, and the dynamometer is very inconvenient to use; meanwhile, the eddy current dynamometer cannot measure the back-dragging friction work of the engine, so that the engine test needing to measure the back-dragging friction work cannot be developed.
Disclosure of Invention
In order to solve the problem that different starters are required to be equipped for different engine devices in the prior art, and the engine back-dragging friction work cannot be measured, the embodiment of the invention provides a dynamometer. The technical scheme is as follows:
a dynamometer device is connected with an engine and comprises a power device and a dynamometer device used for measuring operation parameters of the engine, wherein the power device and the dynamometer device are sequentially connected with the engine, and when the dynamometer device works, the power device drives the dynamometer device to rotate, and the dynamometer device drives the engine to rotate;
the dynamometer equipment further comprises a clutch, the clutch is arranged between the dynamometer device and the power device and is respectively connected with the dynamometer device and the power device, and the clutch is used for connecting or disconnecting the dynamometer device with the power device.
Further, the power device is a variable frequency direct current motor.
Further, the dynamometer is an eddy current dynamometer.
Furthermore, the electric eddy current dynamometer comprises an eddy current brake, a force measuring device, a speed measuring device and two connecting flanges, wherein the force measuring device and the speed measuring device are connected with the eddy current brake, the two connecting flanges are respectively arranged at two ends of the eddy current brake, one connecting flange is connected with the power device, and the other connecting flange is connected with the engine.
Further, the dynamometer equipment further comprises a control system, and the control system is electrically connected with the engine, the power device, the dynamometer and the clutch respectively.
Further, the dynamometer equipment further comprises a transmission structure, the transmission structure is arranged between the dynamometer and the engine, and the transmission structure is connected with the dynamometer and the engine respectively.
Still further, the transmission structure is a transmission shaft.
Preferably, the dynamometer further comprises a base, the base is placed on a horizontal plane, and the power device, the dynamometer and the engine are all arranged on the base.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
the power device is arranged, the power device, the power measuring device and the engine are sequentially connected, the power device drives the power measuring device to rotate, so that the power measuring device drives the engine to rotate, when the rotating speed of the engine reaches the starting rotating speed, the engine is started, the connection between the power device and the power measuring device is disconnected at the moment, the engine drives the power measuring device to rotate, the power measuring device tests the engine, the running parameters of the engine are obtained, when the engine is started, different starters do not need to be equipped for each engine, the engine testing cost is directly reduced, and the use is very convenient; meanwhile, the power device is connected with the power measuring device, the power measuring device can be driven to rotate by the power device, the engine is dragged to rotate under the condition that the engine is not started by the power measuring device, and the back-dragging friction work of the engine is measured, so that the engine test needing to measure the back-dragging friction work is smoothly developed.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a dynamometer provided by an embodiment of the present invention;
wherein,
1 an engine of a vehicle, wherein the engine comprises a power unit,
2, a power device is arranged on the frame,
3 a power-measuring device,
31 are connected to the flange(s) 31,
4, a clutch is arranged on the front end of the motor,
5, a transmission structure is adopted, and the transmission structure,
6, a base.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, the embodiment of the present invention provides a dynamometer device, which is connected with an engine 1, and the dynamometer device includes a power unit 2 and a dynamometer 3, and the power unit 2 and the dynamometer 3 are connected with the engine 1 in sequence. When the engine 1 is started, the power device 2 is disconnected with the dynamometer 3 at the moment, the engine 1 drives the dynamometer 3 to rotate, and the dynamometer 3 measures the operation parameters of the engine 1; when the back-dragging friction work of the engine 1 needs to be measured, the power device 2 drives the dynamometer 3 to rotate, the dynamometer 3 drags the engine 1 to rotate, and the back-dragging friction work of the engine 1 is measured under the condition that the engine 1 is not started.
According to the invention, the power device 2 is arranged, the power device 2, the power measuring device 3 and the engine 1 are sequentially connected, the power device 2 drives the power measuring device 3 to rotate, so that the power measuring device 3 drives the engine 1 to rotate, when the rotating speed of the engine 1 reaches the starting rotating speed, the engine 1 is started, and at the moment, the connection between the power device 2 and the power measuring device 3 is disconnected, so that the engine 1 drives the power measuring device 3 to rotate, the power measuring device 3 tests the engine 1, the running parameters of the engine 1 are obtained, and when the engine 1 is started, different starters do not need to be equipped for each engine 1, so that the testing cost of the engine 1 is directly reduced, and the use is very convenient; meanwhile, the power device 2 is connected with the power measuring device 3, the power measuring device 3 can be driven to rotate by the power device 2, the engine 1 is dragged to rotate under the condition that the engine 1 is not started by the power measuring device 3, and the back-dragging friction work of the engine 1 is measured, so that the engine 1 test needing to measure the back-dragging friction work can be smoothly developed.
Further, as shown in fig. 1, the embodiment of the present invention provides a power measuring apparatus, wherein the power device 2 is a variable frequency dc motor. The variable frequency direct current motor is selected according to the power parameter of the dynamometer 3, and preferably, the power of the variable frequency direct current motor should be matched with the maximum power of the dynamometer 3. So as to ensure that the variable frequency direct current motor can drive the dynamometer 3 to rotate.
Further, as shown in fig. 1, the embodiment of the present invention provides a dynamometer apparatus, wherein the dynamometer device 3 is an eddy current dynamometer. The eddy current dynamometer can achieve the most basic test effect required by the invention, and meanwhile, the eddy current dynamometer also has the advantages of low inertia, high precision, high stability, simple structure, convenience in maintenance, low price and the like.
Further, as shown in fig. 1, an embodiment of the present invention provides a power measuring apparatus, wherein the eddy current power measuring apparatus includes an eddy current brake, a force measuring device, a speed measuring device, and two connecting flanges 31, the force measuring device and the speed measuring device are both connected to the eddy current brake, the two connecting flanges 31 are respectively disposed at two ends of the eddy current brake, and one connecting flange 31 is connected to the power device 2, and the other connecting flange 31 is connected to the engine 1. In use, the power unit 2 rotates to drive the rotor of the eddy current brake to rotate through one connecting flange 31, and the rotor drives the engine 1 to rotate through the other connecting flange 31.
Further, as shown in fig. 1, an embodiment of the present invention provides a power measuring apparatus, where the power measuring apparatus further includes a clutch 4, the clutch 4 is disposed between the power measuring device 3 and the power unit 2, and the clutch 4 is respectively connected to the power measuring device 3 and the power unit 2, and the clutch 4 is used to connect or disconnect the power measuring device 3 and the power unit 2. Before the engine power measuring device is used, the power measuring device 3 is connected with the power device 2, when the running parameters of the engine 1 are measured, the power device 2 drives the power measuring device 3 and the engine 1 to rotate until the engine 1 is started, and after the engine 1 runs stably, the power device 2 is disconnected from the power measuring device 3, so that the engine 1 drives the power measuring device 3 to rotate; when the back-dragging friction work of the engine 1 is measured, the power device 2 drives the power measuring device 3 and the engine 1 to rotate, the engine 1 is always kept in a starting state in the rotating process, and the power device 2 and the power measuring device 3 are always kept in a connecting state. By arranging the clutch 4 as the clutch 4, the power device 2 can be effectively ensured to be stably connected with or disconnected from the dynamometer 3.
Further, as shown in fig. 1, an embodiment of the present invention provides a dynamometer, where the dynamometer further includes a control system, and the control system is electrically connected to the engine 1, the power unit 2, the dynamometer 3, and the clutch 4, respectively. The invention can have a self-starting mode by setting a control system, and by operating the control system, a variable frequency direct current motor is started, the variable frequency direct current motor drives a power measuring device 3 to rotate, and the power measuring device 3 drives an engine 1 to rotate, when the control system detects that the engine 1 is started, the control system automatically sends out an instruction to disconnect a power device 2 from the power measuring device 3; meanwhile, in the back-dragging mode, the control system controls the variable-frequency direct-current motor to drive the dynamometer 3 to rotate, so that the dynamometer 3 drags the engine 1 to rotate, in the process, the rotating speed of the variable-frequency direct-current motor can be accurately controlled through the control system, and any rotating speed required by the variable-frequency direct-current motor can be met.
Further, as shown in fig. 1, an embodiment of the present invention provides a power measuring apparatus, where the power measuring apparatus further includes a transmission structure 5, the transmission structure 5 is disposed between the power measuring device 3 and the engine 1, and the transmission structure 5 is connected to the power measuring device 3 and the engine 1, respectively. The rotating structure is used to transmit the rotation of the variable frequency dc motor to the engine 1.
Further, as shown in fig. 1, the present invention provides a dynamometer, wherein the transmission structure 5 is a transmission shaft. Here, the transmission structure 5 may be a transmission structure 5 such as a gear or a belt.
Preferably, as shown in fig. 1, the dynamometer apparatus according to the embodiment of the present invention further includes a base 6, where the base 6 is placed on a horizontal plane, and the power unit 2, the dynamometer 3, and the engine 1 are all disposed on the base 6.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
according to the invention, the power device 2 is arranged, the power device 2, the power measuring device 3 and the engine 1 are sequentially connected, the power device 2 drives the power measuring device 3 to rotate, so that the power measuring device 3 drives the engine 1 to rotate, when the rotating speed of the engine 1 reaches the starting rotating speed, the engine 1 is started, and at the moment, the connection between the power device 2 and the power measuring device 3 is disconnected, so that the engine 1 drives the power measuring device 3 to rotate, the power measuring device 3 tests the engine 1, the running parameters of the engine 1 are obtained, and when the engine 1 is started, different starters do not need to be equipped for each engine 1, so that the testing cost of the engine 1 is directly reduced, and the use is very convenient; meanwhile, the power device 2 is connected with the power measuring device 3, the power measuring device 3 can be driven to rotate by the power device 2, the engine 1 is dragged to rotate under the condition that the engine 1 is not started by the power measuring device 3, and the back-dragging friction work of the engine 1 is measured, so that the engine 1 test needing to measure the back-dragging friction work can be smoothly developed. The dynamometer 3 provided by the invention not only can test the engine 1, but also can be used as loading equipment of power machines such as the engine 1, a gear box, a speed reducer, a gearbox and the like for testing the transmission power of the engines.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. A dynamometer device is connected with an engine and is characterized by comprising a power device and a dynamometer device used for measuring operation parameters of the engine, wherein the power device and the dynamometer device are sequentially connected with the engine;
the dynamometer equipment further comprises a clutch, the clutch is arranged between the dynamometer device and the power device and is respectively connected with the dynamometer device and the power device, and the clutch is used for connecting or disconnecting the dynamometer device with the power device.
2. Dynamometer apparatus according to claim 1, characterized in that the power means is a variable frequency direct current motor.
3. Dynamometer apparatus according to claim 1, characterized in that the dynamometer means are an eddy current dynamometer.
4. The dynamometer device of claim 3, wherein the eddy current dynamometer includes an eddy current brake, a force measuring device, a speed measuring device, and two connecting flanges, the force measuring device and the speed measuring device are both connected to the eddy current brake, the two connecting flanges are respectively disposed at two ends of the eddy current brake, one of the connecting flanges is connected to the power device, and the other connecting flange is connected to the engine.
5. The dynamometer apparatus of claim 1, further comprising a control system electrically connected to the engine, the power plant, the dynamometer, and the clutch, respectively.
6. The dynamometer apparatus of claim 1, further comprising a transmission structure disposed between the dynamometer and the engine, the transmission structure being connected to the dynamometer and the engine, respectively.
7. The dynamometer apparatus of claim 6, wherein the drive structure is a drive shaft.
8. The dynamometer apparatus of claim 1, further comprising a base, the base being placed on a horizontal surface, the power plant, the dynamometer device, and the engine all being disposed on the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410119766.1A CN103884459B (en) | 2014-03-27 | 2014-03-27 | A kind of measurement of power equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410119766.1A CN103884459B (en) | 2014-03-27 | 2014-03-27 | A kind of measurement of power equipment |
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| CN103884459A CN103884459A (en) | 2014-06-25 |
| CN103884459B true CN103884459B (en) | 2016-03-16 |
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| CN201410119766.1A Active CN103884459B (en) | 2014-03-27 | 2014-03-27 | A kind of measurement of power equipment |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104122019B (en) * | 2014-07-23 | 2017-10-10 | 上汽通用五菱汽车股份有限公司 | A kind of measuring method of engine subsystems frictional work |
| CN104848975A (en) * | 2015-05-21 | 2015-08-19 | 遵义天义利威机电有限责任公司 | Power detection apparatus of motor |
| CN106124103B (en) * | 2016-08-17 | 2018-10-23 | 中检西部检测有限公司 | The dual-purpose dynamometer machine of floating electric motor type engine transient dynamic test and its dual-purpose method |
| CN112985658B (en) * | 2021-02-01 | 2022-05-13 | 温州技师学院 | Chassis power measuring equipment based on IGBT technology |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01233339A (en) * | 1988-03-14 | 1989-09-19 | Mitsubishi Electric Corp | Apparatus for controlling dynamometer |
| CN200979494Y (en) * | 2006-09-22 | 2007-11-21 | 南通常通测试设备有限公司 | An alternative-current dynamometer for engine loading testing |
| CN101135610A (en) * | 2007-09-30 | 2008-03-05 | 中国南车集团株洲电力机车研究所 | Tandem type mixed power vehicle dynamic system test methods and device |
| CN201540201U (en) * | 2009-07-23 | 2010-08-04 | 浙江吉利汽车研究院有限公司 | Hybrid power system bench test device |
| CN102353489A (en) * | 2011-07-21 | 2012-02-15 | 凯迈(洛阳)机电有限公司 | Method for testing double-direction torque of eddy current dynamometer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4547239B2 (en) * | 2004-11-16 | 2010-09-22 | 株式会社エー・アンド・デイ | Engine measuring device |
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2014
- 2014-03-27 CN CN201410119766.1A patent/CN103884459B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01233339A (en) * | 1988-03-14 | 1989-09-19 | Mitsubishi Electric Corp | Apparatus for controlling dynamometer |
| CN200979494Y (en) * | 2006-09-22 | 2007-11-21 | 南通常通测试设备有限公司 | An alternative-current dynamometer for engine loading testing |
| CN101135610A (en) * | 2007-09-30 | 2008-03-05 | 中国南车集团株洲电力机车研究所 | Tandem type mixed power vehicle dynamic system test methods and device |
| CN201540201U (en) * | 2009-07-23 | 2010-08-04 | 浙江吉利汽车研究院有限公司 | Hybrid power system bench test device |
| CN102353489A (en) * | 2011-07-21 | 2012-02-15 | 凯迈(洛阳)机电有限公司 | Method for testing double-direction torque of eddy current dynamometer |
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